Welcome to the dboard where people will criticize you for anonymously badmouthing specific individuals.
The internet is pretty powerful these days in terms of marketing and getting your name out there. It seems to be working quite well for these hockey training programs. There seems to be parents lined up waiting to pay anytime a former nhl guy, D1 dude or even someone who played hockey at a prep school is giving lessons.
I think it's well known that just because someone was good at doing something doesn't mean they know how to teach it or coach it. I guess time will tell but in the end no one will ever be able to prove of these skills coaches actually made their kid a better player.